`mail.flightinstructor.ch`

DNSSEC	⚠️ Not signed
A	157.90.80.158^{🇩🇪 Hetzner157.90.0.0/16 HETZNER-DC}
		PTR	`lx55.hoststar.hosting`

`flightinstructor.ch`

	DNSSEC	🔒 Signed (DS record present)
	A	157.90.80.158^{🇩🇪 Hetzner157.90.0.0/16 HETZNER-DC}
	NS	`ns1.hoststar.hosting` ⭐
	NS	`ns2.hoststar.hosting`
	MX	`mail.flightinstructor.ch` ⭐
	TXT	`v=spf1 a:flightinstructor.ch mx ~all`
	SOA	`ns1.hoststar.hosting`hostmaster@flightinstructor.ch 2026-05-07 #1

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DNS History

2 records (1 active, 1 former)

●A157.90.80.1582026-02-25 → 2026-05-13 · 3 obs

○ 2016-07-15 19:35:50
● 2026-02-25 18:04:54
● 2026-05-13 14:16:16

○A213.239.215.1032015-08-23 → 2016-07-15 · 4 obs

● 2015-08-23 01:33:12
● 2016-07-15 19:35:50
○ 2026-02-25 18:04:54
○ 2026-05-13 14:16:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	b.nic.ch, a.nic.ch, f.nic.ch, e.nic.ch...	-
flightinstructor.ch	ns2.hoststar.hosting, ns1.hoststar.hosting	-

✅ Authoritative Response

Server:185.48.228.80

NS records: ns2.hoststar.hosting, ns1.hoststar.hosting

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1076ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`157.90.80.158`

Analysis

IP Addresses

mail.flightinstructor.ch points to a single IP address: 157.90.80.158.

Other host names such as avenda.ch, koelliker.com, mail.acocella.ch, mail.wdaa.eu and www.bwg-basel.ch share IPs with mail.flightinstructor.ch.

mail.flightinstructor.ch - robtex.com